Magnetism is traditionally taught within the subject of electromagnetism at the undergraduate and graduate levels in physics courses, with the goal of establishing a solid foundation of the underlying physical mechanisms before advancing to more specialized topics. Oftentimes, a laboratory component of these courses involves practical, hands-on…

Short articles describe the construction and use of a probe for measuring magnetic fields, the determination of the speed of electromagnetic transmission by utilizing standard time signals relayed from an orbiting satellite, and an apparent paradox in the theory of electron deflection in cathode ray tubes. (AL)

Describes a number of simple experiments and demonstrations useful in secondary school science teaching. (AL)

Discusses the essential electrical characteristics of a particular model of soldering gun. Presents four classroom demonstrations that utilize the soldering gun to test the following geometrics of wire loops as electromagnets: (1) the original tip; (2) a single circular loop; (3) a Helmholtz coil; and (4) the solenoid. (MDH)